<!DOCTYPE html>
<script src="../../resources/testharness.js"></script>
<script src="../../resources/testharnessreport.js"></script>
<script>

test(function () {
    var node = document.createElement('div');
    assert_true('prepend' in node);
    var prepend = 'mine';
    var getAttribute = 'mine';
    with (node) {
        assert_true(prepend === 'mine');
        assert_false(getAttribute === 'mine');
    }
    assert_true('Symbol' in window);
    var unscopables = Object.getPrototypeOf(node)[Symbol.unscopables];
    assert_true(unscopables.prepend);
}, 'ChildNode.prepend() unscopable');

function test_prepend(node, nodeName) {

    test(function() {
        var parent = node.cloneNode();
        parent.prepend();
        assert_array_equals(parent.childNodes, []);
    }, nodeName + '.prepend() without any argument, on a parent having no child.');

    test(function() {
        var parent = node.cloneNode();
        parent.prepend(null);
        assert_equals(parent.childNodes[0].textContent, 'null');
    }, nodeName + '.prepend() with null as an argument, on a parent having no child.');

    test(function() {
	var parent = node.cloneNode();
	parent.prepend(undefined);
	assert_equals(parent.childNodes[0].textContent, 'undefined');
    }, nodeName + '.prepend() with undefined as an argument, on a parent having no child.');

    test(function() {
        var parent = node.cloneNode();
        parent.prepend('text');
        assert_equals(parent.childNodes[0].textContent, 'text');
    }, nodeName + '.prepend() with only text as an argument, on a parent having no child.');

    test(function() {
        var parent = node.cloneNode();
        var x = document.createElement('x');
        parent.prepend(x);
        assert_array_equals(parent.childNodes, [x]);
    }, nodeName + '.prepend() with only one element as an argument, on a parent having no child.');

    test(function() {
        var parent = node.cloneNode();
        var child = document.createElement('test');
        parent.appendChild(child);
        parent.prepend(null);
        assert_equals(parent.childNodes[0].textContent, 'null');
        assert_equals(parent.childNodes[1], child);
    }, nodeName + '.prepend() with null as an argument, on a parent having a child.');

    test(function() {
        var parent = node.cloneNode();
        var x = document.createElement('x');
        var child = document.createElement('test');
        parent.appendChild(x);
        parent.appendChild(child);
        parent.prepend(child, x);
        assert_array_equals(parent.childNodes, [child, x]);
    }, nodeName + '.prepend() with all children as arguments, on a parent having two children.');

    test(function() {
        var parent = node.cloneNode();
        var x = document.createElement('x');
        var child = document.createElement('test');
        parent.appendChild(child);
        parent.prepend(x, 'text');
        assert_equals(parent.childNodes[0], x);
        assert_equals(parent.childNodes[1].textContent, 'text');
        assert_equals(parent.childNodes[2], child);
    }, nodeName + '.prepend() with one element and text as argument, on a parent having a child.');

    test(function() {
        var parent = node.cloneNode();
        var doc2 = document.implementation.createDocument("http://www.w3.org/1999/xhtml", "html");
        assert_throws_dom('HierarchyRequestError', () => { parent.prepend(doc2, "foo") });
        assert_equals(parent.firstChild, null);
    }, nodeName + '.prepend() with a Document as an argument should throw.');
}

test_prepend(document.createElement('div'), 'Element');
test_prepend(document.createDocumentFragment(), 'DocumentFrgment');
</script>
</html>
